Measurement of the distance, the thickness and the radius of curvature Purpose :To learn how to use vernier caliper, micrometer and spherometer to measure internal and external diameters of a pipe,the thickness of a copper rods, and the radius of curvature of spherical lenses. 1) Vernier caliper: As shown in Fig. 1 the main fixed scale in the vernier caliper has 1 mm gradations while th sliding scale (vernier scale) has 0.05 mm gradations. The smallest division of vernier scale is called the least count of vernier caliper. It may be different for different vernier calipers (and other measuring instruments).

In order to measure length, put an object between the jaws and close the jaws gently. Fix the object with the fixing screw.

(Fig.2b)

In Fig. 2b, the leftmost thick mark on the sliding scale is between 9 mm and 10 mm, so the number of whole millimeters is 9. And number 3 on the vernier scale matches exactly with a mark on the main scale, so the caliper reading is 9+(3x0.05), which equals to 9.15 mm.

When we want to measure external diameter, you use outside jaws, and for internal diameter and depth, we use inside jaws and depth probe, respectively.

The spindle of an ordinary metric micrometer has 2 threads per millimeter, and thus one complete revolution moves the spindle through a distance of 0.5millimeter. The longitudinal line on the inside sleeve is graduate with 1 millimeter divisions and 0.5 millimeter subdivisions. The thimble has 50 graduations, each being 0.01 millimeter (one-hundredth of a millimeter). Outside sleeve indicates 12.5 mm, and longitudinal line on the inside...

YOU MAY ALSO FIND THESE DOCUMENTS HELPFUL

...Physics (from Greek), i.e. "knowledge, science of nature", from φύσις, physis, i.e. "nature"[1][2][3][4][5]) is a part of natural philosophy and a natural science that involves the study of matter[6] and its motion through space and time, along with related concepts such as energy and force.[7] More broadly, it is the general analysis of nature, conducted in order to understand how the universe behaves.[8][9][10]
Physics is the field of science that studies the physical world. From the large (galaxies, planets, etc) to the small (how proteins fold, atoms, etc) physics plays a role. It is a natural science that studies the properties of matter, motion, force, energy, space and time.
Physics has a number of divisions or sub-categories. Each of these are more focused areas of study.
Quantum Physics, the study of the quantum world (smaller than an atom).
Particle Physics, the study of atomic and quantum particles such as electrons, protons, gluons and neutrinos.
Theometical Physics, this is the branch of physics which deals in theory. It's generally at the forefront of physics and thought. After a theory has been shown possible that theory may move into another branch of physics.
Astrophysics, studies aspects of stars, galaxies and space. It is closely linked with astronomy.
Medical Physics, the study of...

...﻿PDP PhysicsLab Report – 01
NAME: Wang Xueqian
DATE: 2014/06/21
Introduction
In this experiment, we will investigate the relationship between the linear speed of an object and magnitude of centripetal force acting on it. We will use a stopper moving in a circle to create an upward force on the hanging mass; at equilibrium, the upward force on the mass will exactly equal the centripetal force.
Apparatus
Two-hole Stopper
Plastic Tube
Plastic Clip
Electronic balance
Hooked Masses
Stop Watch
String
Procedures
1. Place the stopper on the end of a meter stick so that half the stopper is on the stick.
2. Move the tube such that the end of the tube nearest the stopper is 0.81m away and attach the clip to the string at the other end of the tube.
3. Attach a hooked mass of 50g to the end of the string.
4. Now begin swinging the stopper. Adjust the speed at which you are swinging the stopper until the clip remains about 1cm below the tube.
5. Measure the time it takes for 30 revolutions.
6. Compute linear speed of the stopper according to data collected in step 5.
7. Compute theoretical speed of the stopper according to weight of the hanging mass.
8. Add more masses to the string and repeat Steps 3-7.
Data Collection
Raw data table
Trials
Time for 30 revolutions (±0.001s)
Average Time for 30 revolutions
Mass (g)
Mass of Stopper (±0.1g)
1
11.22
10.96
200
7.7
10.37
11.28
2
13.59
10.46
250
9.95
10.96
3
10.81
10.00
300
9.22...

...﻿
Daily Use of Physics
Jason L. McDuffy
University of Memphis
Physics 1 (online)
Project 1
Daily Use of PhysicsPhysics is considered to be a powerful lens that helps people view the everyday world. Physics is reflected in the everyday phenomena, puzzles and toys that offer a variety of interesting challenges leading to deep and interesting problems that derive from science and mathematics. It provides us an understanding of energy, motion and explains these facts as a combination of fundamental particles interacting through fundamental forces. Hence, it is a study of natural phenomena (Oerter, 2006).
Physics is everywhere around us. It is the backbone for any daily life example including electricity, electric light, wristwatch, CD player, cell phone, radio, plasma TV set, computer, refrigerator, and others. Any technology that is used in our daily life is related to this science. In addition, it is believed that physics is a necessity in solving a number of future problems as all forward-looking developments are based on the insights of physics. These potential problems may be related to the development of fuel cells, nuclear fusion as an energy source, and others.
Once upon a time our eyes were the only way for us to see the world. But increasingly sophisticated instruments developed by physicists have allowed...

...Christopher Gooden
Dr. Jan Yarrison-Rice
Physics 101
5 April 2005
Physics in Sports
When many people think of sports, the topic of physics doesn't always come to mind. They usually don't think about connecting athletics with academics. In reality math, science, and especially physics, tie into every aspect of sports. Sports are a commonality that brings nations together, Soccer, known as football to most of the world, is said to an unspoken language, which unties people from different lands through a passion to play a game. Athletics and sports are made by the people who play, watch, and study them. Without all of the enthusiastic participants, there would be no development, education, and intensity that we all know and love about sports. The one component that reigns over the world of sports that most people don't realize is physics, Gravity, uniform circular motion, projectile motion, and constant acceleration are a few that occur in every sport event that has ever taken place.
In the three articles that I chose to write about the concepts of physics are explained in each one. In every article there is the similarity that physics and technology are the reasons for the advances in the sports. In the first article it is evident by the statement, "High-tech bats have so enhanced players' power that some leagues have taken to limiting the number of home runs a team can...

...﻿
LAB REPORT
Pin Jointed Frame
1312800
1st year school of engineering University of Warwick
Date Submitted: 8/01/2014
Summary
In this experiment the main aim was to modelling a frame subjected to multiple loading conditions and record how the force and strain vary to different loads. The frame represented a simple roof trusses and the loading conditions are similar to what a typical roof would undergo. In this experiment a universal fame was used with load cells to provide the load and digital force and strain instruments to record the data. As the load was increased the strain went up linear showing a linear relationship between loading and strain. After analysing results it was found that the results for experimental forces compared to theoretical forces were very close showing that this experiment was very accurate, with very small uncertainty, the reason for this is due to very sensitive equipment as a change of 1µϵ is equivalent to change of 6 N (using young’s modulus) and other factors described in detail in the report.
Table of Contents
Summary
1 Introduction Pg 4
2 Theory Pg.4
3.1 Apparatus Pg 6
3.2 Experimental...

...Physics began when man first started to study his surroundings. Early applications of physics include the invention of the wheel and of primitive weapons. The people who built Stone Henge had knowledge of physical mechanics in order to move the rocks and place them on top of each other. It was not until during the period of Greek culture that the first systematic treatment of physics started with the use of mechanics. Thales is often said to have been the first scientist, and the first Greek philosopher. He was an astronomer, merchant and mathematician, and after visiting Egypt he is said to have originated the science of deductive geometry. He also discovered theorems of elementary geometry and is said to have correctly predicted an eclipse of the sun. Many of his studies were in astronomy but he also observed static electricity. Phythogoras was a Greek philosopher. He discovered simple numerical ratios relating the musical tones of major consonances, to the length of the strings used in sounding them. The Pythagorean theorem was named after him, although this fundamental statements of deductive geometry was most likely first an idea from Egyptian methods of measurements. With the help of his followers he discovered that the earth was a sphere, but he did not believe it revolved around the sun. Democritus was the leader of a group called Atomists. Although they were unable to prove that matter was made up of small particles, they...

...between the two, grouped in traditional fields such as acoustics, optics, mechanics, thermodynamics, and electromagnetism, as well as in modern extensions including atomic and nuclear physics, cryogenics, solid-state physics, particle physics, and plasma physics.
Physics (from Ancient Greek: φύσις physis "nature") is a natural science that involves the study of matter and its motion through space and time, along with related concepts such as energy and force. More broadly, it is the general analysis of nature, conducted in order to understand how the universe behaves.
Scalars and Vectors
Physics is a mathematical science. The underlying concepts and principles have a mathematical basis. Throughout the course of our study of physics, we will encounter a variety of concepts that have a mathematical basis associated with them. While our emphasis will often be upon the conceptual nature of physics, we will give considerable and persistent attention to its mathematical aspect.
The motion of objects can be described by words. Even a person without a background in physics has a collection of words that can be used to describe moving objects. Words and phrases such as going fast, stopped, slowing down,speeding up, and turning provide a sufficient vocabulary for describing the motion of objects. In physics, we use these words and many...

...A New Look At Sports
Intro To Cosmology
By: Jarrett Leuta-Douyere
A New Look at Sports
Growing up in a family filled with athletic desire to be great at whatever sport we would participate in and understanding simple physics in Cosmetology, I never realized how much physics comes into play when playing sports. We don’t call it physics when were playing, football, basketball, baseball because it’s just a natural feeling when were throwing a ball or trying to tackle someone. When we began to learn about Newton’s law of Gravity. All sports in the world today have all displayed many aspects of force, motion, gravity, distance and speed but we don’t take the time to realize actually what were doing. Sports have been a big part of my life ever since I was able to stand but I never have once stopped and asked why? Why does a person have tackle with such force and such speed to be able to bring down the runner, or why a baseball can be hit with such force off a bat to be able to hit a home run. Sports are filled with physics that no one understands because we never take the time to ask why, sports are all about physics and the techniques we use to be great at a sport.
When I started to think about all the sports I have played in my life and ask why things happened the way they do I started with the first sport I fell in love with. Baseball was one of the sports that I have always had such a...